http://forum.square-enix.com/ffxiv/t...=1#post1345365
maybe?
oh wait you can't access their forum ahahah.
"
http://na.finalfantasyxiv.com/lodest...06/blog/77559/
UDP
55296-55551
TCP
80, 8080, 443, 55296-55551
To clarify, this is what SE says, but this isn't what's being used.
The launcher needs to reach 124.150.157.126 and 124.150.157.117 (port 443 SSL)
The login/lobby needs to reach 124.150.157.158:54994 and the game uses port 54680 and 54681 while doing this
When you click on your server (Excalibur 199.91.189.42:55006) it opens two connections to it, using ports 54906 and 54907 on your system.
What you're supposed to do is let UPnP work, or use "trigger" ports , when the game connects to a specific IP or port number, the software firewall in the router is supposed to let connections 54994-55006 pass through.
What causes peoples routers to crash is that the outbound ports are being blocked, or the inbound traffic is being overwhelmed and doesn't know where to send it. Honestly if you have a poor quality router (some brands may use the same brand for their cheap vxWorks devices and their slightly more expensive, much more hackable Linux based ones) this doesn't surprise me. The firmware may come with stock settings that recognize things like WoW and Everquest, but never anything new. "
tl;dr maybe try port forwarding. Although then someone else says this is very bad advice so idk.